Home / 12,897.82-19,336.98-6,655.12

Finding the Fourth Proportional to 12,897.82, 19,336.98 and 6,655.12

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Solution

The fourth proportional to 12,897.82, 19,336.98 and 6,655.12 is: 9,977.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,897.82 : 19,336.98 = 6,655.12 : x
  2. Step 2: Convert to fraction form
    12,897.82/19,336.98 = 6,655.12/x
  3. Step 3: Cross multiply
    12,897.82x = 19,336.98 × 6,655.12
  4. Step 4: Simplify right side
    12,897.82x = 128,689,922.34
  5. Step 5: Solve for x
    x = 128,689,922.34/12,897.82
  6. Step 6: Final answer
    x = 9,977.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.